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Author Topic: Team Go Dog, Go! Modified Partial Streamliners  (Read 550442 times)
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wobblywalrus
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« Reply #2940 on: November 13, 2017, 09:27:14 PM »

The combustion chamber volume was measured again after the ceramic coatings were applied.  The coatings raise the compression from 11.7 to 1 to 11.9 to 1.  Coatings are on the inside and outside faces of the valves, the combustion chambers, the insides of all ports and the tops of the pistons.

There is no smell of oxidation in the oil or signs of oxidation or excess heat in critical areas such as under the exhaust valve spring seats.  The coatings did their jobs. 
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wobblywalrus
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« Reply #2941 on: November 19, 2017, 10:34:03 AM »

The overtime I am doing at the job is preventing me from doing much work on the bike.  The plan is to use the engine I had in September with retimed cams, a rebuilt tail section, and triple clamps with less offset.  Also, maybe a different rear tire with some "off road" capability.

Wheelspin was an issue based on calculations using timeslip speed and tach reading.  The crank firing is at 360 degree intervals now.  A 270 - 450 degree firing interval can be built into these engines to give better traction.  Parts have been collected over the years to do the 270 - 450 conversion. A side project is to obtain the rest of the parts while I am working and have money.  The engine will be assembled after I retire.

This is an almost brand new crank my youngest boys got from a crashed bike.  The gear that takes power from the crank to the clutch was damaged in the wreck.  They tried to remove it.  The attempt managed to remove one gear retaining bolt and broke several others off so the threaded parts are in the crank.

Triumph never intended for these bolts to be removed.  Methinks they are a slight interference fit and they were installed when the crank was warm and it shrank down onto the bolts when it cooled.  The broken bolt removal is too complicated for WW.  Is there someone who does a good job of fastener removal?

 


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manta22
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« Reply #2942 on: November 19, 2017, 07:30:37 PM »

WW;

Find someone with an EDM; that should remove the bolt without buggering up the holes in the gear.

Regards, Neil  Tucson, AZ
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Regards, Neil  Tucson, AZ
wobblywalrus
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« Reply #2943 on: November 19, 2017, 11:50:25 PM »

Duuuh, what is EDM?
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salt27
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« Reply #2944 on: November 20, 2017, 12:06:28 AM »

Duuuh, what is EDM?

Yeah, me too.   huh

I looked it up, Electrical Discharge Machining.
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Queeziryder
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« Reply #2945 on: November 20, 2017, 03:48:19 AM »

Hi Bo,
Commonly known as spark erosion, done in a vat of oil or similar.  cheers
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Old enough to know better, but too interested in speed to care
Peter Jack
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« Reply #2946 on: November 20, 2017, 08:15:45 AM »

Here's a start Bo. They're in Beaverton, OR.

www.bdeinc.com

Good luck.

Pete
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WOODY@DDLLC
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It's GONE ......... the Ohio Mile! :-(


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« Reply #2947 on: November 20, 2017, 09:52:58 AM »

WW, may just be "Loctite" that needs heating (300~400F) to soften before you can remove them. EDM will not remove these threads - only the core or threads and all. Normal threads after EDM can just be screwed out with a pick. If it is threaded it is meant to be removed.
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All models are wrong, but some are useful! G.E. Box (1967) www.designdreams.biz
wobblywalrus
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« Reply #2948 on: November 21, 2017, 02:23:40 AM »

It is some super high strength Loctite they use.  Heat and lots of cussing removed one bolt.  The head was drilled off of the remaining bolt.  The little cover was removed.  Now I see how Triumph put this crank together.  The broken bolts are in the gear that i am replacing.  The gear is press fit on the crank shaft.

Some lunchtime I-net research says the gear can be gotten by buying a crankshaft.  They are not sold separately.  The cost of a decent used crank and a new one are not much different.  A new one will be ordered.  This way, the journals will be fresh and I will know the condition of what I am buying.
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WOODY@DDLLC
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It's GONE ......... the Ohio Mile! :-(


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« Reply #2949 on: November 21, 2017, 07:59:45 PM »

You did cuss counter-clockwise - right?  huh grin
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All models are wrong, but some are useful! G.E. Box (1967) www.designdreams.biz
wobblywalrus
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« Reply #2950 on: November 21, 2017, 10:21:44 PM »

It is a British bike.  Whitworth swaring did the job.

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WOODY@DDLLC
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It's GONE ......... the Ohio Mile! :-(


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« Reply #2951 on: November 23, 2017, 09:51:14 AM »

Sounds more like BS to me!  angry  British Standard that is!  grin  Dead Horse
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All models are wrong, but some are useful! G.E. Box (1967) www.designdreams.biz
wobblywalrus
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« Reply #2952 on: November 23, 2017, 10:26:03 AM »

A slightly used 270-450 crankshaft with gear attached will be in my oily paws tomorrow.  A long time benefactor has one and he gave it to me.  A new one costs over $900 so this is a big help.
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RansomT
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« Reply #2953 on: November 23, 2017, 11:24:55 AM »

Sounds like a WIN!
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wobblywalrus
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« Reply #2954 on: November 23, 2017, 10:51:06 PM »

The nice thing about these Bonnevilles is that they are easy to work on.  Bikes are like ladies, it seems.  Good looking and fast is what we look for when we are young and affordable and easy to live with is what we like when we are older.

  












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